improved naming

ethcore/src/client/client.rs

@@ -256,7 +256,7 @@ impl Client {
 			}
 		}
 		let mut last_hashes = LastHashes::new();
-		last_hashes.resize(256, Default::default());
+		last_hashes.resize(256, H256::default());
 		last_hashes[0] = parent_hash;
 		for i in 0..255 {
 			match self.chain.block_details(&last_hashes[i]) {
@@ -649,7 +649,7 @@ impl BlockChainClient for Client {
 			timestamp: view.timestamp(),
 			difficulty: view.difficulty(),
 			last_hashes: last_hashes,
-			gas_used: Default::default(),
+			gas_used: U256::zero(),
 			gas_limit: U256::max_value(),
 		};
 		// that's just a copy of the state.
@@ -696,7 +696,7 @@ impl BlockChainClient for Client {
 			timestamp: view.timestamp(),
 			difficulty: view.difficulty(),
 			last_hashes: last_hashes,
-			gas_used: U256::zero(),
+			gas_used: U256::default(),
 			gas_limit: view.gas_limit(),
 		};
 		for t in txs.iter().take(address.index) {
@@ -924,7 +924,7 @@ impl BlockChainClient for Client {
 								entry: log,
 								block_hash: hash.clone(),
 								block_number: number,
-								transaction_hash: hashes.get(index).cloned().unwrap_or_else(Default::default),
+								transaction_hash: hashes.get(index).cloned().unwrap_or_else(H256::default),
 								transaction_index: index,
 								log_index: log_index + i
 							})

ethcore/src/env_info.rs

@@ -47,7 +47,7 @@ impl Default for EnvInfo {
 	fn default() -> Self {
 		EnvInfo {
 			number: 0,
-			author: Default::default(),
+			author: Address::default(),
 			timestamp: 0,
 			difficulty: 0.into(),
 			gas_limit: 0.into(),

ethcore/src/miner/transaction_queue.rs

@@ -80,8 +80,7 @@
 //!      - It removes all transactions (either from `current` or `future`) with nonce < client nonce
 //!      - It moves matching `future` transactions to `current`
 
-use std::default::Default;
-use std::cmp::{Ordering};
+use std::cmp::Ordering;
 use std::cmp;
 use std::collections::{HashMap, BTreeSet};
 use util::{Address, H256, Uint, U256};

ethcore/src/types/receipt.rs

@@ -45,7 +45,7 @@ impl Receipt {
 		Receipt {
 			state_root: state_root,
 			gas_used: gas_used,
-			log_bloom: logs.iter().fold(Default::default(), |mut b, l| { b = &b | &l.bloom(); b }), //TODO: use |= operator
+			log_bloom: logs.iter().fold(LogBloom::default(), |mut b, l| { b = &b | &l.bloom(); b }), //TODO: use |= operator
 			logs: logs,
 		}
 	}

ethcore/src/types/trace_types/filter.rs

@@ -55,7 +55,7 @@ impl AddressesFilter {
 	/// Returns blooms of this addresses filter.
 	pub fn blooms(&self) -> Vec<LogBloom> {
 		match self.list.is_empty() {
-			true => vec![Default::default()],
+			true => vec![LogBloom::default()],
 			false => self.list.iter()
 				.map(|address| LogBloom::from_bloomed(&address.sha3()))
 				.collect(),

ethcore/src/types/transaction.rs

@@ -163,8 +163,8 @@ impl Transaction {
 	pub fn invalid_sign(self) -> SignedTransaction {
 		SignedTransaction {
 			unsigned: self,
-			r: Default::default(),
-			s: Default::default(),
+			r: U256::default(),
+			s: U256::default(),
 			v: 0,
 			hash: Cell::new(None),
 			sender: Cell::new(None),
@@ -175,8 +175,8 @@ impl Transaction {
 	pub fn fake_sign(self, from: Address) -> SignedTransaction {
 		SignedTransaction {
 			unsigned: self,
-			r: Default::default(),
-			s: Default::default(),
+			r: U256::default(),
+			s: U256::default(),
 			v: 0,
 			hash: Cell::new(None),
 			sender: Cell::new(Some(from)),

rpc/src/v1/impls/mod.rs

@@ -106,7 +106,7 @@ fn prepare_transaction<C, M>(client: &C, miner: &M, request: TransactionRequest)
 		action: request.to.map_or(Action::Create, Action::Call),
 		gas: request.gas.unwrap_or_else(|| miner.sensible_gas_limit()),
 		gas_price: request.gas_price.unwrap_or_else(|| default_gas_price(client, miner)),
-		value: request.value.unwrap_or_else(Default::default),
+		value: request.value.unwrap_or_else(U256::default),
 		data: request.data.map_or_else(Vec::new, |b| b.to_vec()),
 	}
 }